Mount San Antonio Weather Forecast

    • 43
    • 54

    Mostly Sunny

    • 42
    • 57

    Mostly Sunny

    • 44
    • 60

    Mostly Sunny

    • 36
    • 56

    Mostly Sunny

    • 33
    • 49

    Mostly Sunny

    • 32
    • 46

    Partly Sunny

    • 33
    • 42

    Partly Sunny

Today 19 Apr Eastern San Gabriel Mountains

Partly cloudy. Highs from the mid 60s to lower 70s at low Elevations to the mid 50s to around 60 at high Elevations. West Winds around 15 Mph in the afternoon.

Tonight 19 Apr Eastern San Gabriel Mountains

Partly cloudy in the evening then mostly clear. Lows in the mid 40s to mid 50s except the mid 30s to around 40 Colder Valleys and Slopes. West Winds around 15 Mph.

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Mount San Antonio Temperature Statistics

April Temperature

Brackett Field Airport (14.9 miles)

  • Lowest 6 April, 2024

    41 °F

  • Average April

    60.2 °F

  • Highest 11 April, 2024

    84.2 °F

Climate (2019–Present)

Brackett Field Airport (14.9 miles)

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  • Average Low 2019–2024

    55.5 °F

  • Average 2019–2024

    67.6 °F

  • Average High 2019–2024

    75.5 °F
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